About Performance Max optimization experiments: Asset testing

You can test the impact of assets on your Performance Max campaigns. The primary goal of asset testing is to find out how adding or modifying assets impacts your Performance Max campaign's performance. This helps you answer key questions like:

  • What's the value of adding assets to my Performance Max campaigns?
  • How do different asset combinations perform?
  • What's the impact of adding videos to my Performance Max campaign?

Currently, you can test the impact of adding assets to a feed-only Performance Max campaign. We are working on enabling more asset testing options in the future.

On this page

How it works

Unlike other experiment types that test 2 separate campaigns, asset testing for Performance Max campaigns uses a single campaign, splitting the traffic into a control group and a treatment group. This approach reduces the learning period and delivers faster results.

Here's how the traffic is divided:

  • Control group: Your existing Performance Max campaign with a Merchant Center product feed and no additional assets.
  • Treatment group: The same Performance Max campaign, but with assets you've added.

Instructions

Recommendations for optimal setup

  • Make sure you don’t change the settings of automatically created assets, Final URL expansion, or video enhancement feature after you create the experiment.
  • Don’t change any assets in the campaign after the experiment has started.
  • Ensure that the assets you are uploading adhere to the limitations outlined in this article.

Set up asset testing

  1. In your Google Ads account, click the Campaigns icon Campaigns Icon.
  2. Click the Campaigns drop down in the section menu.
  3. Click Experiments.
  4. To create a new experiment:
    1. Click the plus button from “All experiments” tab, and then click Performance Max card and Performance Max Optimization or
    2. Click the plus button from “Performance Max experiments” tab, and then Test a Performance Max feature.
  5. Under “What do you want to test?”, select Assets.
  6. Select “Asset testing for retailers” as the experiment type.
  7. Click Select campaign to select an existing Performance Max campaign for the experiment, then select the Asset Group you want to test.
  8. Define the traffic split percentage for "Control" and "Treatment" arms.
  9. Under the “Treatment arm” card, click Add additional assets. Only supported assets are expandable and editable.
  10. Click the appropriate asset type to add the assets. Selected assets are summarized in the treatment arm card.
  11. To rename your experiment, click on the “Experiment name” field.
  12. Click the “Start date” and “End date” drop-down to select the start date and end date accordingly. Currently you can only choose today as your “Start date”.
  13. Click Schedule.

Reporting

You can find the performance of your control and treatment groups in your Experiment Report page. The results summary table will show if you have enough data to get conclusive results. Learn more about how to Monitor your experiments.


Take action

In the “Experiment summary” page, you can end the experiment by selecting one of the following options:

  • Apply experiment: This will add the additional assets to the control campaign and start serving them to 100% of eligible traffic.
  • End experiment: This will end the experiment without the additional assets. The campaign will go back to its original settings and serve 100% of the traffic.

Related links

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